Results 41 to 50 of about 1,903 (206)

Effects of the herbicide atrazine in neotropical catfish (Rhamdia quelen)

Ecotoxicology and Environmental Safety, 2013
The exposure to a world-wide used herbicide atrazine (ATZ) (96h exposure to 2, 10, and 100μgL(-1)), was investigated on the freshwater fish Rhamdia quelen through a multi biomarker approach. Liver histopathology revealed leukocyte infiltration, hepatocyte vacuolization like steatosis and necrosis areas, leading to raised lesion index levels in all ...
M, Mela, I C, Guiloski, H B, Doria, M A F, Randi, C A, de Oliveira Ribeiro, L, Pereira, A C, Maraschi, V, Prodocimo, C A, Freire, H C, Silva de Assis   +9 more
openaire   +2 more sources

Celioscopic liver biopsy in silver catfish (Rhamdia quelen) [PDF]

Pesquisa Veterinária Brasileira, 2015
Endosurgery has been used for assessment of fish celomatic cavity, as well as for obtaining biopsies for organic analysis. Such minimally invasive access may also be used for the analysis of environmental impact on biomarkers of pollution. In Brazil, studies and literature regarding the use of celioscopy in fish are sparse.
Feranti, João P.S., Guimarães, Luciana D., Oliveira, Marília T. de, Hartmann, Hellen F., Souza, Fernando W. de, Corrêa, Luís F.D., Silva, Marco A.M., Brun, Maurício V.   +7 more
openaire   +4 more sources

Gross brain morphology of Rhamdia quelen (Quoy & Gaimard 1824) (Ostariophysi: Siluriformes: Heptapteridae)

Papéis Avulsos de Zoologia, 2018
The brain gross morphology of Rhamdia quelen is described and compared with seven species of six genera of Heptapteridae. Interspecific variation in shape, size, and position of brain subdivisions was observed in all examined species.
Vitor Pimenta Abrahão, Fábio Müller dos Reis de Salles Pupo, Oscar Akio Shibatta   +2 more
doaj   +1 more source

Plant‐Derived Treatments for Monogenean Parasites in Farmed Fish: A Systematic Review and Meta‐Analysis

Reviews in Aquaculture, Volume 18, Issue 3, June 2026.
ABSTRACT Monogeneans are among the most problematic ectoparasites in finfish aquaculture. Plant‐derived compounds have been widely explored as therapeutic agents, yet their efficacy and safety have not been quantitatively synthesized across studies. This study provides a meta‐analysis of plant‐based treatments against monogeneans, integrating 453 in ...
Francisco Neptalí Morales‐Serna
wiley   +1 more source

Relatório de estágio e efeito de diferentes dietas no desempenho larval de jundiá rhamdia quelen (quoy e gaimard, 1824) [PDF]

, 2013
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Curso de Agronomia.O estágio foi realizado no Laboratório de Biologia e Cultivo de Peixes de Água Doce (LAPAD/AQI/CCA/UFSC), de março a junho de 2013.
Cano, Clara Luna de Bem Barreto
core  

Aquatic and Terrestrial Invertebrates Support Fish Assemblages of Amazonian Streams

Freshwater Biology, Volume 71, Issue 5, May 2026.
ABSTRACT The Amazonian stream network is remarkable not only for its extent but also for its rich fish diversity. These streams are interconnected with the surrounding forests. However, key ecological aspects of Amazonian freshwater ecosystems, such as energy flows and carbon sources sustaining fish assemblages, remain poorly understood. In this study,
Pedro H. S. Basilio, Cecília G. Leal, Débora R. de Carvalho, Gabriel L. Brejão, Dennys H. C. Drager, Gilberto N. Salvador, Marcos A. Alves‐Filho, Vladimir E. Costa, Gabriel O. Ferraz, Gustavo S. Ferreira, Rafael P. Leitão, Luciano F. A. Montag, Jady V. A. S Santos, Everton C. Silva, Paulo S. Pompeu   +14 more
wiley   +1 more source

Desempenho produtivo de larvas de Jundiá (Rhamdia quelen) em sistema de cultivo com bioflocos [PDF]

, 2013
Este estudo teve por objetivo avaliar o desempenho de larvas de jundiá (Rhamdia quelen) em sistema de bioflocos. Foram utilizados cinco tratamentos, com larvas estocadas na densidade de 25 peixes L-1 durante 21 dias.
Poli, Moisés Angel
core  

Genetic variability of captive populations of Rhamdia quelen (Teleostei: Pimelodidae) using microsatellite markers

Biotemas, 2017
The analysis of genetic variability in populations that are candidates for breeding programs is important for selecting a base population, which maximizes genetic divergence.
Marina Virmond, Danielle Conceição, Hilton Amaral Junior, Rodolfo Luis Petersen   +3 more
doaj   +1 more source

Intestinal responses in pacu (Piaractus mesopotamicus) exposed to fasting and refeeding nutritional management

The Anatomical Record, Volume 309, Issue 3, Page 663-673, March 2026.
Abstract Fasting is a practice in the aquaculture industry that aims to reduce feed costs. This practice can affect the gastrointestinal system of fish. The intestine plays a pivotal role in the nutrition and overall health of fishes. The present study sought to evaluate the effects of fasting and refeeding on body weight, intestine somatic index (ISI),
Karine Nathiele Nogueira Farias, André Luiz do Nascimento Silva, Marco Shizuo Owatari, Sabrina Fuzer Gonçalves, Robson Andrade Rodrigues, Cristiane Meldau de Campos, Lilian Franco‐Belussi, Carlos Eurico Fernandes   +7 more
wiley   +1 more source

Produção do Jundiá (Rhamdia quelen) em áreas de entorno do Parque Estadual da Serra do Tabuleiro em Paulo Lopes-SC [PDF]

, 2005
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.A ocupação e uso da terra no entorno de unidades de conservação podem ser conflitantes com a manutenção da diversidade ...
Esquivel, Betina Muelbert
core